1,2
Problem E2118, Amer. Math. Monthly, 76 (1969), 830-831.
Adjacent sequences: A001141 A001142 A001143 this_sequence A001145 A001146 A001147
Sequence in context: A073915 A076381 A063455 this_sequence A121253 A014118 A007704
nonn
njas
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