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A264871 Array read by antidiagonals: T(n,m) = (1+2^n)^m; n,m>=0. 2
1, 2, 1, 4, 3, 1, 8, 9, 5, 1, 16, 27, 25, 9, 1, 32, 81, 125, 81, 17, 1, 64, 243, 625, 729, 289, 33, 1, 128, 729, 3125, 6561, 4913, 1089, 65, 1, 256, 2187, 15625, 59049, 83521, 35937, 4225, 129, 1, 512, 6561, 78125, 531441, 1419857, 1185921, 274625, 16641, 257 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..53.

FORMULA

G.f. for row n: 1/(1-(1+2^n)*x). - R. J. Mathar, Dec 15 2015

EXAMPLE

       1,       2,       4,       8,      16,      32,

       1,       3,       9,      27,      81,     243,

       1,       5,      25,     125,     625,    3125,

       1,       9,      81,     729,    6561,   59049,

       1,      17,     289,    4913,   83521, 1419857,

       1,      33,    1089,   35937, 1185921,39135393,

MATHEMATICA

Reverse /@ Table[(1 + 2^(n - m))^m, {n, 0, 9}, {m, 0, n}] // Flatten (* Michael De Vlieger, Nov 27 2015 *)

CROSSREFS

Cf. A000079 (row 0), A000244 (row 1), A000351 (row 2), A001019 (row 3), A001026 (row 4), A009977 (row 5), A000051 (column 1), A028400 (column 2), A136516 (main diagonal), A165327 (upper subdiagonal).

Sequence in context: A247023 A051129 A319075 * A067410 A213947 A188403

Adjacent sequences:  A264868 A264869 A264870 * A264872 A264873 A264874

KEYWORD

nonn,tabl,easy

AUTHOR

R. J. Mathar, Nov 27 2015

STATUS

approved

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Last modified August 10 22:22 EDT 2020. Contains 336403 sequences. (Running on oeis4.)