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A064826 Numbers which are the sum of two pentagonal numbers (A000326) in exactly two different ways. 5
211, 215, 352, 381, 447, 602, 660, 663, 766, 807, 853, 874, 1002, 1172, 1197, 1248, 1259, 1372, 1427, 1457, 1571, 1612, 1622, 1639, 1652, 1665, 1752, 1850, 1862, 1927, 1996, 2047, 2152, 2245, 2297, 2302, 2332, 2351, 2415, 2472, 2497, 2506, 2523, 2618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

211 = 176 + 35 = 210+1

LINKS

Table of n, a(n) for n=1..44.

CROSSREFS

A064816, A000326.

Sequence in context: A020365 A031780 A036232 * A136601 A108406 A051268

Adjacent sequences:  A064823 A064824 A064825 * A064827 A064828 A064829

KEYWORD

nonn

AUTHOR

Jonathan Ayres (jonathan.ayres(AT)btinternet.com), Oct 23 2001

STATUS

approved

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Last modified April 27 06:52 EDT 2017. Contains 285508 sequences.