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A046458 Positive even integers that are not the sum of two nonprime odd integers. 2
4, 6, 8, 12, 14, 20, 32, 38 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A118081 for numbers not representable as the sum of two odd composite numbers. Roberts shows that every even number greater than 38 is the sum of an odd composite number and one of the five composite numbers 9, 15, 21, 27, 33. - T. D. Noe, Jun 01 2008, Jun 05 2008

REFERENCES

Joe Roberts, "Lure of the Integers", The Mathematical Association of America, 1992, p. 189.

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Sequence in context: A113451 A270191 A029709 * A096629 A334468 A020177

Adjacent sequences: A046455 A046456 A046457 * A046459 A046460 A046461

KEYWORD

nonn,fini,full

AUTHOR

Patrick De Geest, Aug 15 1998

STATUS

approved

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Last modified January 27 13:15 EST 2023. Contains 359840 sequences. (Running on oeis4.)