// output of ./demo/comb/bell-number-demo.cc: // Description: //% Aitken's array and Bell numbers. //% Cf. OEIS sequence A011971: Aitken's array, //% also called Bell triangle or Peirce triangle. arg 1: 11 == N [Show N rows] default=11 0: 1 1: 1 2 2: 2 3 5 3: 5 7 10 15 4: 15 20 27 37 52 5: 52 67 87 114 151 203 6: 203 255 322 409 523 674 877 7: 877 1080 1335 1657 2066 2589 3263 4140 8: 4140 5017 6097 7432 9089 11155 13744 17007 21147 9: 21147 25287 30304 36401 43833 52922 64077 77821 94828 115975 10: 115975 137122 162409 192713 229114 272947 325869 389946 467767 562595 678570