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A048362 a(n) is base of smallest triangle containing exactly n 7's. 0
12, 59, 381, 3684, 8692, 70381, 122292, 3762381, 7453707, 18856074, 124721736, 587838545, 3996943276, 18845571218, 27483805332 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

Eric Weisstein's World of Mathematics, Triangular Number

CROSSREFS

Cf. A036524.

Sequence in context: A167533 A244907 A062477 * A231215 A231340 A099321

Adjacent sequences:  A048359 A048360 A048361 * A048363 A048364 A048365

KEYWORD

nonn,base,more

AUTHOR

Patrick De Geest, Mar 15 1999.

EXTENSIONS

a(13)-a(15) from Lars Blomberg, May 16 2011

STATUS

approved

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Last modified December 3 08:48 EST 2016. Contains 278698 sequences.