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A052348 Indices of A052343 (ways to write n as sum of two triangular numbers) where record values are reached. 7
0, 6, 81, 276, 1056, 1381, 6906, 17956, 34531, 40056, 200281, 520731, 1001406, 1482081, 7410406, 19267056, 37052031, 60765331, 303826656, 789949306, 1519133281, 3220562556, 13429138206, 16102812781, 41867313231, 80514063906, 196454315931, 711744324931 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..28.

Kenneth Korbin, Problem 665, The College Mathematics Journal Vol. 30 No. 5, Nov. 1999.

EXAMPLE

a(2) = 6 because 6 = 6 + 0 = 3 + 3. a(3) = 81 because 81 = 3 + 78 = 15 + 66 = 36 + 55.

CROSSREFS

Probably differs from A053587 only at n=1, 2, 4.

Cf. A000217, A052343, A052344, A052345, A052346, A052347.

Sequence in context: A077393 A264694 A002676 * A309902 A196909 A197076

Adjacent sequences:  A052345 A052346 A052347 * A052349 A052350 A052351

KEYWORD

nonn

AUTHOR

Christian G. Bower, Jan 23 2000

EXTENSIONS

a(23)-a(26) from Donovan Johnson, May 24 2009

a(27)-a(28) from Donovan Johnson, Mar 20 2013

STATUS

approved

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Last modified February 26 08:33 EST 2020. Contains 332277 sequences. (Running on oeis4.)