A038338 Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*12^j.

1, 12, 12, 144, 288, 144, 1728, 5184, 5184, 1728, 20736, 82944, 124416, 82944, 20736, 248832, 1244160, 2488320, 2488320, 1244160, 248832, 2985984, 17915904, 44789760, 59719680, 44789760, 17915904, 2985984, 35831808, 250822656

Offset

0,2

Links

Harvey P. Dale, Table of n, a(n) for n = 0..10000

B. N. Cyvin, J. Brunoll, and S. J. Cyvin, Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), 109-121.

Bulat Khaidarov, Enumeration of Certain k-Block Partitions of Barry, J. Int. Seq. 29 (2026), Art. 26.2.8. See p. 6 (Table 2).

Mathematica

Flatten[Table[Binomial[i, j]12^(i-j) 12^j, {i, 0, 10}, {j, 0, i}]] (* Harvey P. Dale, Dec 18 2012 *)

Crossrefs

Sequence in context: A067123 A178341 A165833 * A221796 A222298 A122253

Adjacent sequences: A038335 A038336 A038337 * A038339 A038340 A038341

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane

Status

approved