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A062690 Smallest triangular number that contains the string n in its exact center. 5
0, 1, 120, 3, 741, 153, 6, 171, 780, 190, 10, 111156, 1128, 131328, 2145, 15, 3160, 1176, 4186, 101926, 152076, 21, 1225, 102378, 3240, 5253, 7260, 1275, 28, 232903, 113050, 9316, 1326, 133386, 2346, 5356, 36, 1378, 7381, 133903, 3403, 2415, 124251, 1431, 6441 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Jon E. Schoenfield, Table of n, a(n) for n = 0..10000

EXAMPLE

a(13)=131328 is the smallest triangular number that contains the digit string '13' in its exact center.

CROSSREFS

Cf. A018855, A062829.

Sequence in context: A267286 A062829 A163598 * A267745 A267025 A127148

Adjacent sequences:  A062687 A062688 A062689 * A062691 A062692 A062693

KEYWORD

easy,nonn,base

AUTHOR

Erich Friedman, Jul 04 2001

EXTENSIONS

Corrected by Harvey P. Dale, Jul 20 2001

a(42)-a(44) from Jon E. Schoenfield, Dec 25 2018

STATUS

approved

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Last modified July 4 23:17 EDT 2022. Contains 355086 sequences. (Running on oeis4.)