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 A014110 Number of ordered ways of writing n as a sum of 4 squares of natural numbers. 9
 1, 4, 6, 4, 5, 12, 12, 4, 6, 16, 18, 12, 8, 16, 24, 12, 5, 24, 30, 16, 18, 28, 24, 12, 12, 28, 42, 28, 12, 36, 48, 16, 6, 36, 42, 36, 29, 28, 48, 28, 18, 48, 60, 28, 24, 60, 48, 24, 8, 44, 72, 48, 30, 48, 84, 36, 24, 52, 54 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS T. D. Noe, Table of n, a(n) for n = 0..10000 FORMULA Coefficient of q^n in (1/16)*(1 + theta_3(0, q))^4; or coeff. of q^n in (Sum q^(i^2), i=0..inf)^4. CROSSREFS Sequence in context: A092039 A243371 A123999 * A266491 A323016 A261637 Adjacent sequences:  A014107 A014108 A014109 * A014111 A014112 A014113 KEYWORD easy,nonn AUTHOR Joe Keane (jgk(AT)jgk.org) STATUS approved

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Last modified January 17 09:49 EST 2020. Contains 330949 sequences. (Running on oeis4.)