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A038457 |First digit-last digit| for triangular numbers. +0
4
0, 0, 0, 0, 1, 4, 1, 6, 3, 1, 0, 0, 1, 8, 4, 1, 5, 2, 0, 1, 2, 1, 1, 4, 3, 2, 2, 5, 2, 1, 1, 2, 3, 4, 0, 6, 0, 4, 6, 7, 8, 7, 6, 3, 9, 4, 0, 7, 5, 4, 4, 5, 7, 0, 4, 1, 5, 2, 0, 1, 1, 0, 2, 4, 2, 3, 1, 6, 4, 3, 3, 4, 6, 1, 3, 2, 4, 0, 2, 3, 3, 2, 0, 3, 3, 2, 2, 5, 3, 1, 1, 2, 4, 3, 1, 4, 2, 1, 3, 4, 5 (list; graph; listen)
OFFSET

0,6

CROSSREFS

A000217.

Sequence in context: A057160 A109915 A098987 this_sequence A141649 A101347 A127556

Adjacent sequences: A038454 A038455 A038456 this_sequence A038458 A038459 A038460

KEYWORD

easy,nonn,base

AUTHOR

Felice Russo (felice.russo(AT)katamail.com)

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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