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A052346 Smallest number which is the sum of two triangular numbers in exactly n different ways. 0
1, 2, 16, 81, 471, 1056, 1381, 11781, 6906, 17956, 34531, 123256, 40056, 4462656, 305256, 448906, 200281, 1957231, 520731, 10563906, 1001406, 11222656, 539550781, 3454506, 1482081, 75865156, 7172606106, 8852431, 25035156 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

EXAMPLE

471 = 300+171 = 351+120 = 435+36 = 465 + 6

CROSSREFS

Cf. A052343-A052348, A053587, A064816.

Sequence in context: A012680 A012684 A053587 * A071893 A069440 A000431

Adjacent sequences:  A052343 A052344 A052345 * A052347 A052348 A052349

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jan 23 2000

EXTENSIONS

a(27), a(28) = 8852431, 25035156. a(26) not yet found.

a(26) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 17 2008

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Last modified February 14 10:43 EST 2012. Contains 205614 sequences.