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A036922
Even composite numbers whose digit sum equals the digit sum of (sum of prime factors, counted with multiplicity).
0
4, 22, 94, 114, 150, 166, 202, 204, 222, 224, 274, 342, 346, 382, 438, 450, 454, 526, 540, 562, 612, 634, 640, 706, 852, 922, 1068, 1086, 1120, 1122, 1138, 1200, 1230, 1232, 1282, 1314, 1318, 1400, 1626, 1642, 1770, 1820, 1822, 1894, 1966, 2070, 2080
OFFSET
1,1
PROG
(PARI) isok(n)=my(f=factor(n)); n%2==0 && n>2 && sumdigits(sum(i=1, #f~, f[i, 1]*f[i, 2])) == sumdigits(n) \\ Andrew Howroyd, Jun 19 2021
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jan 04 1999
EXTENSIONS
Title reworded by Sean A. Irvine, Nov 30 2020
STATUS
approved