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A133015 Concatenation of next n positive triangular numbers. 0
1, 36, 101521, 28364555, 667891105120, 136153171190210231, 253276300325351378406, 435465496528561595630666, 7037417808208619039469901035, 1081112811761225127513261378143114851540 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

Omar E. Pol, Determinacion geometrica de los numeros primos y perfectos.

CROSSREFS

Cf. A053067, A053068. Triangular numbers: A000217.

Sequence in context: A212327 A053945 A097573 * A203270 A185960 A216832

Adjacent sequences:  A133012 A133013 A133014 * A133016 A133017 A133018

KEYWORD

easy,nonn,base

AUTHOR

Omar E. Pol, Oct 19 2007

STATUS

approved

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Last modified January 28 22:40 EST 2020. Contains 331328 sequences. (Running on oeis4.)