A299772 Triangle read by rows T(n,k) in which the partial sums of column k give the column k of triangle A180681.

1, 2, 3, 3, 2, 6, 4, 11, 2, 10, 5, 7, 14, 2, 15, 6, 24, 22, 18, 2, 21, 7, 15, 30, 26, 23, 2, 28, 8, 42, 41, 58, 31, 29, 2, 36, 9, 26, 81, 48, 68, 37, 36, 2, 45, 10, 65, 72, 124, 88, 80, 44, 44, 2, 55, 11, 40, 127, 121, 142, 100, 94, 52, 53, 2, 66, 12, 93, 156, 232, 177, 208, 114, 110, 61, 63, 2, 78

Offset

1,2

Links

Table of n, a(n) for n=1..78.

Example

Triangle begins:
   1;
   2,  3;
   3,  2,   6;
   4, 11,   2,  10;
   5,  7,  14,   2,  15;
   6, 24,  22,  18,   2,  21;
   7, 15,  30,  26,  23,   2,  28;
   8, 42,  41,  58,  31,  29,   2,  36;
   9, 26,  81,  48,  68,  37,  36,   2, 45;
  10, 65,  72, 124,  88,  80,  44,  44,  2, 55;
  11, 40, 127, 121, 142, 100,  94,  52, 53,  2, 66;
  12, 93, 156, 232, 177, 208, 114, 110, 61, 63,  2, 78;
...

Crossrefs

Column 1 is A000027.

Leading diagonal is A000217.

Row sums give A206440.

Apparently the second diagonal gives A007395.

Cf. A180681.

Sequence in context: A023139 A328484 A319442 * A304311 A175393 A184829

Adjacent sequences: A299769 A299770 A299771 * A299773 A299774 A299775

Keyword

nonn,tabl

Author

Omar E. Pol, Mar 20 2018

Status

approved