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A214856 Number of triangular numbers in interval ](n-1)^2, n^2] for n>0, a(0)=1. 1
1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..73.

EXAMPLE

10, 15 are in interval ]9, 16] , a(4) = 2.

CROSSREFS

Cf. A214848

Sequence in context: A105690 A214364 A175922 * A006337 A214848 A006338

Adjacent sequences:  A214853 A214854 A214855 * A214857 A214858 A214859

KEYWORD

nonn,easy

AUTHOR

Philippe Deléham, Mar 08 2013

STATUS

approved

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Last modified April 21 22:12 EDT 2019. Contains 322328 sequences. (Running on oeis4.)