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 A102237 Smallest number equal to the product of n primes which is also equal to the sum of n distinct primes. 0
 2, 9, 12, 36, 48, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Conjecture: a(n) = 2^n for n>5. - Ray Chandler Feb 25 2005 LINKS EXAMPLE a(1) = 2; a(2) = 9 = 3*3 = 2+7; a(3) = 12 = 2*2*3 = 2+3+7; a(4) = 36 = 2*2*3*3 = 3+5+11+17; a(5) = 48 = 2*2*2*2*3 = 2+3+5+7+31. CROSSREFS Sequence in context: A178312 A253608 A126977 * A324571 A076505 A218073 Adjacent sequences:  A102234 A102235 A102236 * A102238 A102239 A102240 KEYWORD nonn AUTHOR Giovanni Teofilatto, Feb 18 2005 EXTENSIONS Corrected and extended by Ray Chandler Feb 25 2005 STATUS approved

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Last modified September 29 09:40 EDT 2020. Contains 337428 sequences. (Running on oeis4.)