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A077222 a(1) = 1 and then alternately the smallest even and odd numbers not occurring earlier such that the sum of two successive terms is a square. 1
1, 8, 17, 32, 49, 72, 9, 16, 33, 48, 73, 96, 25, 24, 57, 64, 105, 120, 169, 56, 65, 104, 121, 168, 193, 248, 41, 40, 81, 88, 137, 152, 209, 80, 89, 136, 153, 208, 233, 128, 97, 192, 249, 112, 113, 176, 185, 256, 273, 352, 177, 184, 257, 272, 353, 376, 465, 160 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..57.

CROSSREFS

Cf. A077221.

Sequence in context: A322473 A247117 A099358 * A077221 A226601 A106648

Adjacent sequences:  A077219 A077220 A077221 * A077223 A077224 A077225

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Nov 03 2002

EXTENSIONS

Corrected and extended by John W. Layman, Jan 12 2005

STATUS

approved

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Last modified October 26 05:58 EDT 2021. Contains 348257 sequences. (Running on oeis4.)