A381227 Irregular triangle read by rows: row n lists the A381226(n) numbers constructed in the definition of A381226, in increasing order.

1, 1, 2, 1, 2, 3, 6, 1, 2, 3, 4, 5, 24, 1, 2, 3, 4, 10, 11, 120, 1, 2, 3, 5, 6, 26, 27, 720, 1, 2, 3, 8, 9, 70, 71, 5040, 1, 2, 3, 4, 14, 15, 200, 201, 40320, 1, 2, 3, 4, 5, 24, 25, 602, 603, 362880, 1, 2, 3, 6, 7, 43, 44, 1904, 1905, 3628800, 1, 2, 3, 8, 9, 79, 80, 6317, 6318, 39916800

Offset: 1

Author

N. J. A. Sloane, Feb 25 2025

Keywords

• nonn
• tabf

Examples

			Triangle begins:
   1;
   1, 2;
   1, 2, 3, 6;
   1, 2, 3, 4,  5, 24;
   1, 2, 3, 4, 10, 11, 120;
   1, 2, 3, 5,  6, 26,  27,  720;
   1, 2, 3, 8,  9, 70,  71, 5040;
   1, 2, 3, 4, 14, 15, 200,  201, 40320;
   1, 2, 3, 4,  5, 24,  25,  602,   603,  362880;
   1, 2, 3, 6,  7, 43,  44, 1904,  1905, 3628800;
   ...
		

Crossrefs

Cf. A139004, A381226, A381228, A381229.