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URL: https://oeis.org/A068134

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A068134
Index of the smallest triangular number with digit sum = n-th triangular number.
1
0, 1, 2, 3, 7, 12, 56, 109, 368, 1332, 5656, 28248, 140547, 774325, 8485151, 34339452, 397492132, 3996973827, 63229707890, 1039037824132, 10853561442116, 305279835527631, 4240235842471234, 117388244641426491, 3997445934568646292, 99999889989926488708
OFFSET
0,3
CROSSREFS
Cf. A068133.
Sequence in context: A056294 A084423 A361910 * A249051 A329413 A225093
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Feb 21 2002
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org), Jun 17 2002
a(18)-a(19) from Max Alekseyev, Jun 19 2011
a(0)=0 inserted by Sean A. Irvine, Jan 29 2024
a(20)-a(25) from Max Alekseyev, May 25 2025
STATUS
approved